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Small shape deviati...
Small shape deviations causes complex dynamics in large electric generators
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- Lundström, Niklas L. P. (författare)
- Umeå universitet,Luleå tekniska universitet,Institutionen för tillämpad fysik, maskin- och materialteknik,Department of Mathematics and Mathematical Statistics, Umeå University, SE-90187 Umeå, Sweden,Institutionen för matematik och matematisk statistik,Department of Applied Physics and Mechanical Engineering, Luleå University of Technology, SE-97187 Luleå, Sweden
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- Grafström, Anton (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig resurshushållning,Department of Forest Resource Management
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- Aidanpää, Jan-Olov (författare)
- Luleå tekniska universitet,Institutionen för tillämpad fysik, maskin- och materialteknik,Department of Applied Physics and Mechanical Engineering, Luleå University of Technology, SE-97187 Luleå, Sweden
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(creator_code:org_t)
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- 2014-06-05
- 2014
- Engelska.
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Ingår i: European Physical Journal. - : EDP Sciences. - 1286-0042 .- 1286-0050. ; 66:2
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Abstract
Ämnesord
Stäng
- We prove that combinations of small eccentricity, ovality and/or triangularity in the rotor and stator can produce complex whirling motions of an unbalanced rotor in large synchronous generators. It is concluded which structures of shape deviations that are more harmful, in the sense of producing complex whirling motions, than others. For each such structure, we derive simplified equations of motions from which we conclude analytically the relation between shape deviations and mass unbalance that yield non-smooth whirling motions. Finally we discuss validity of our results in the sense of modeling of the unbalanced magnetic pull force
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Annan maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Other Mechanical Engineering (hsv//eng)
- NATURVETENSKAP -- Matematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- Computer Aided Design
- Datorstödd maskinkonstruktion
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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